<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<script src="https://npmcdn.com/@reactivex/rxjs@5.0.0-beta.2/dist/global/Rx.umd.js"></script>
<title>Exploring Subject</title>
</head>
<body>
</body>
</html>
//create a subject
const mySubject = new Rx.Subject();
//add subscribers
const subscriberOne = mySubject.subscribe(val => {
console.log('***SUBSCRIBER ONE***', val);
});
const subscriberTwo = mySubject.subscribe(val => {
console.log('***SUBSCRIBER TWO***', val);
});
//publish values to observers of subject
mySubject.next('FIRST VALUE!');
mySubject.next('SECOND VALUE!');
//redux/ngrx-store has a concept of a dispatcher, or method to send actions to application
//lets extend Rx.Subject with our Dispatcher class to maintain familiar terms
//inherit from subject
class Dispatcher extends Rx.Subject{
dispatch(value : any) : void {
this.next(value);
}
}
//create a dispatcher (just a Subject with wrapped next method)
const dispatcher = new Dispatcher();
//add subscribers
const subscriberOne = dispatcher.subscribe(val => {
console.log('***SUBSCRIBER ONE***', val);
});
const subscriberTwo = dispatcher.subscribe(val => {
console.log('***SUBSCRIBER TWO***', val);
});
//publish values to observers of dispatcher
dispatcher.dispatch('FIRST DISPATCHED VALUE!');
dispatcher.dispatch('SECOND DISPATCHED VALUE!');
Output
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